change url format
change uniqueness rule of Topic slugs
move common topic to detective's ownership
begin endpoints migration in front code
change all endpoints for user management in frontend
change endpoints for entity management in frontend
change endpoints in tests
finish endpoint changes in frontend code
change endpoints in middleware urls
Added user to test's fixtures
Fixed test typo
remove error messages when user clicks somewhere in the app
Added unicode strings for meta-data creation in topic view
fix TopicsFactory for new duplicated topics
fix TopicsFactory's getTopic for new duplicated topics
remove debug print
Merge branch 'feature/user-unique-slugs' into develop

Conflicts:
	app/detective/tests/api.py
Added link to docs
migration 0026_move_common_topic_to_detective : pass if user doesn't exist
migration 0026 : get or create user detective